Yes! I complained about this at dev.dota2, and the response was 90% "yeah, there should be an option to disable direct movement through the map" and 10% "Wow, I guess I just assumed people would be good enough to not do that."

My first ever pub match I was told by the OD at mid that he was going to "rape me sideways" for killing him. I politely informed him after the match that it was my first ever match, if that made him feel any better.